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How do I find this?

How Do I Find This class=

Sagot :

Answer:

16pi cm^2, 112pi cm^3, 351.68 cm^3

Step-by-step explanation:

Given: Height=7cm, radius=4cm

1. The base is a circle and Area of circle = pi * r^2

Plug in the radius to get --> A = pi * (4cm)^2 = 16*pi cm^2

2. This is asking for the volume of the cylinder.

Volume of cylinder is V=h*pi*r^2 --> 7cm * pi * (4cm)^2 = 112 pi cm^3

3. Just plug 3.14 into pi --> 112 * pi cm^3 = 351.68 cm^3